HQRP Filter 6-pack for Bionaire H100-6-3, H100-6, HWF100UCS, H100-3-5, BWF100CS, CB2002, Cool Mist Filter G Humidifier + HQRP Coaster HQRP&reg; 6-pack Cool Mist Humidifier Filter Replacement plus HQRP&reg; Coaster; Filter Helps To Capture Mineral Deposits And Improve Efficiency Of The Humidifier; For Maximum Performance Change Filter Every 30 Days; Compatible with Original filter. 2 weeks DOA replacement warranty!